Pump



Patented June 14, 1921.

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PUMP. APPLICATION FILED Auc.2e. 1919.

Param OFFICE.

OC-EOLA JONES, OF HOUSTON, TEXAS.

PUMP.

Specification of Letters Patent.

Application filed August 26, 1919. Serial No. 320,031.

T 0 all whom t may concern.'

Be it known that OCEOLA JONES, a citizen of the United States, residing at Houston, in the county of Harris and Sta-te of Texas, has invented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to new and useful improvements in a pump, and is particularly adapted for use in pumping oil or other fluid from wells.

One object of the invention is to provide a pump of the character described adapted to be let down into and submerged inthe fluid in a well, said pump being adapted to Ybe operated by fluid pressure, to pump the fluid in which it is Vsubmerged from the well.

Another object of the invention is to provide a pump of the.V character described which includes a cylinder, and a plunger therein, said plunger being actuated by fluid pressure in one direction, and by gravity in the other direction. v

A further feature of the invention resides in the provision of an improved type of valve controlling the application of the iuid pressure tothe pump plunger.

With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangementof parts, an example of which is given in this specificationand illustrated in the accompanying drawings, wherein:

Figure 1, is a side view of the pump.

Fig. 2, is a vertical sectional view.

Fig. 3, is a plan view of the lower cylinder head.

Fig. 4, shows a side view of the Valve actuating mechanism, and

Fig. 5, shows a sectional view thereof.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1, refers to the pump cylinder, having the upper and lower cylinder heads 2 and 3. Leading from the head 2, there is the outlet pipe 4, which is controlled by the outlet valve 5, and the head 2 has a plurality of inlet valves 6. Within the cylinder there is the plunger 7, connected to which is the plunger rod 8, said rod operating through a centrally located stuffing box 9, in the cylinder head 3. The outer end of the plunger rod is secured to the cross head 10, which is provided with suitable bearings which slide on the bearing rods 11, 11. These rods are secured at one end to the cylinder head 3, and at their other ends are Xed to the Vcross bar 12. A coil spring 13 is attached at one end to the cross head 10, and at its other end to the cross bar 12, and provided for a purpose to be hereinafter described.

Formed integrally with the cylinder head 3, there is a tubular valve casing 14, fittedv within which, there is a cylindrical valve 15, which is provided with a peripheral lengthwise groove 16. The groove 16 is relatively wide, and it is in constant communication with the inlet port 17, which coinmunicates with the interior of the cylinder 1, through the head 3. By oscillating, o1"

partially rotating, the valve, the groove 16 may be alternatively brought into communication with tlie ports 18 and 19, the former of which communicates with the fluid pressure pipe 20, and the latter of which is an exhaust port for the motive fiuid. The valve 15 is fixed to the stem 21, which projects out through a suitable bearing in the end of the valve casing 14. Fixed upon said projecting end, there is a disk 22, and loosely mounted adjacent said disk, there is the circular rack member 23. One side of this rack Vmember is formed with a rack face 24, which is in mesh with the corresponding rack face 25, into which one side `of the small rack member 26 is formed. This last mentioned rack member is rotatably mounted upon a suitable bearing pin 27, and a coil spring 28 has its respective ends eccentrically attached to the members 23, and 26. The rack member 23 is provided with an arcuate slot 29, through which the pin 30, carried by the disk 22 projects. An actuating rod 31 is slidably mounted in suitable bearings, and its upper end projects through a stuffing box 32, carried by the cylinder head 3. This rod is formed with annular shoulders 33, 33, which are spaced apart, and the rack member 23 has a laterally eX- tending 34, whose free end has a bearing 35, through which the rod 31 moves. The cross head 10 has a laterally projecting arm 36, adapted to Contact against the lower end of the rod 31.

Upon power stroke, the motive fluid is admitted through the pipe 20, and passes from it through the port 18, the groove 16, and the lower port 17, entering the cylinder un- Pateiited June 14, 1921.

derneath the plunger and operating to litt said plunger, and to thereby force the fluid into the cylinder up through the valve and out through the discharge pipe 4. As the plunger moves upwardly, the cross head and the arm 36 move upwardly with it, said arm contacting against the lower end oi the rod 31 and moving said rod upwardly untilV the lower shoulder 33 contacts against the reeend ofthe arm 34, causing a partial rotation of the rack members 23, and 26, in the direction indicated by the arrows in Fig. 4. During this movement, the pin 30 remains stationary in the'slot 29, until the points of attachment of the spring 28 to the members 23 vand 26 have passed the centers oi said members, Vand thereupon `the pull of said spring will cause a quick movement thereof, the end of the slot 29 engaging `against the pin 30, causing the disk 22 and the valve to quickly rotate, thus carrying the groove 16 into communication with the exhaust port 19, and closing the port 18. rThereupon the pressure in the cylinder 1'will be released through said exhaust port and the port 1S will be closed by said valve, Thereupon the plunger 7 will descend by gravity assisted f by the spring 13 drawing an additional supply of fluid through the valves 6 into the cylinder. `Vhen the plunger descends, it will contact against the upper end of the rod 31, forcing the same downwardly, causing the upper shoulder 33 to contact against the free end of the arm 34, and force said arm downwardly, vcausing' a rotation of the rack members 23 and 26, in the reverse direction from that indicated by the arrows in Fig.

' 4. `When the points of attachment of the spring 28 have again passed the centers, the

vided with a projecting pin, a pair of disk like intermeshing rack members, one of which is loosely mounted on said stem, and

provided with an arcuate slot through which said pin projects, and a yieldable member whose respective ends are eccentrically attached to said respective' rack'members.

2. A pump including a cylinder, a plunger therein, a iuid pressure line entering one end of the cylinder, an inlet and an outlet port at the lother end of the cylinder, valves controlling said ports, a discharge pipe leading from one of said orts, a valve mechanism controlling said uid pressure line and including' a tubular valve Casing, a cylindrical valve rotatable therein, and provided with a stem, a member fixed to said stem and provided with a projecting pin, a pair of disk-like intermeshing rack members, one of which is loosely mounted on said stem and provided with an arcuate slot through which said pin projects, and a yieldable member whose respective ends are eccentrically attached to said respective rack members.

lin testimony whereof he has signed his name to this specification in the presence of two subscribing witnesses.

Witnesses:

E. V. HARDWAY, IRENE I. BRUNS.

ocnora JoNEs. 

